High melt-strength polyolefin composites and methods for making and using same
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United States of America Patent
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Aug 3, 2004
Grant Date -
Oct 24, 2002
app pub date -
Feb 7, 2002
filing date -
Feb 20, 2001
priority date (Note) -
Expired
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Abstract
The invention includes a process for preparing an improved melt-strength polyolefin blend by incorporating a polyolefin/clay nanocomposite product. The nanocomposite-modified polyolefin blend is used to form articles through processing operations that involve stretching and/or drawing, such as thermoforming, melt spinning, blow molding and foaming. The addition of the nanocomposite product to the polyolefin blend improves the sag resistance of the polyolefin and broadens the processing window of the operation.
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